Also, how'd you narrow down your search to these two markets? 

Happy to serve as a resource if you have any questions about the local market.

Large apartment complexes flooded the market with inventory and are offering crazy incentives and amenities that crush the small landlord which can make finding a tenant challenging and often for less than market rent. 

market.

If an in-person visit is not feasible, we can easily arrange video tours to accommodate your schedule.

Quote from @Mo Karim: How are the Milwaukee burbs market?

I have looked at other coastal markets that are less expensive than Charleston proper.

Market insights and understanding the rental rates in the neighborhood.

Start with Reonomy or Costar to identify all the 100+ units in your target market (on and off market) and then see if you can get into direct contact with some owners.

For my money, I'd look there and let the market bring you up.